annexa vs adnexa

annexa and adnexa both are nouns.

Word	Noun	Adjective	Verb	Adverb
annexa	Yes	No	No	No
adnexa	Yes	No	No	No

As nouns, annexa and adnexa are synonyms defined as:

annexa and adnexa: accessory or adjoining anatomical parts or appendages to an organ (especially of the embryo)

annexa (noun)	adnexa (noun)
accessory or adjoining anatomical parts or appendages to an organ (especially of the embryo)	accessory or adjoining anatomical parts or appendages to an organ (especially of the embryo)